Schedule: a typical summer Sunday (the flights of Jul 26, 2026), re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.

DELTA · FLIGHT DL 409 SCHEDULED · TYPICAL SCHEDULE

Sunday, October 4 Today

DL 409 · SEA → ATL

departs 10:58 PM PT · arrives 6:45 AM ET

Forecast issued Sun 3:00 PM ET · 11h before departure

DL 409 isn’t flying SEA → ATL today

This listing came from a typical schedule. According to the FAA, DL 409 flies these legs today:

ONT → ATL · 7:10 AM · scheduled
ONT → ATL · 7:10 AM · landed
ONT → ATL · 7:09 AM · scheduled